Wido den Hollander 308b7a5c37 CLOUDSTACK-1302: Allow cache_mode to be NULL in the database
Not allowing this field to be NULL broke master due to the default
data which gets loaded into the database during initial startup of the
management server.

During generation of the XML for the VM it will however default to
'none' if NULL is passed
2013-11-21 18:59:31 +01:00
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